Planer Integra 750Plus, Instructions For Use Manual

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27
Operating the Integra 750Plus
Warm the chamber for the next run
14. To warm up the chamber, press the RUN button. This causes the chamber to heat
up to the start temperature of the previous program. The light should remain on.
15. When the light flashes and the bleeper sounds, load the new samples, as described
above.
Switch off the freezer
16. Switch off the freezer.
17. If a dewar is being used, switch off the pump at the wall.
3.2.2
Stopping a run
At any time, you can stop a run prematurely by pressing the STOP button on the front
panel of the freezer.
If you subsequently press RUN, the chamber will heat or cool, as necessary, to reach
the start temperature of the program again. The light flashes and the bleeping sounds
when the freezer is at the start temperature. Pressing STOP again at this point, will
terminate the program with the chamber left at the normal start temperature.
3.2.3
Shutting down the system
It is important to ensure that a program is not running, by pressing STOP if necessary,
before switching off the Integra. This avoids unnecessary discharging of the backup
battery; see Power Failures below.
If you have finished using the system for a short period of time, simply remove all
specimens from the chamber and switch off the freezer and pump when the chamber
has reached the start temperature.
However, if the equipment is to remain unused for longer than a working day, also turn off
the liquid-nitrogen tap, or in the case of a Planer dewar, depressurise the dewar by
opening the red pressure-release valve.
3.2.4
Power failures
An integral backup battery allows the program to continue to run for 1 minute following a
loss of mains power, although the solenoid valve and heaters do not operate. If mains
power is restored within this period, the system regains control of the chamber
temperature. If the power is not restored, the program terminates.
3.2.5
Dealing with a system lockup
Although the Integra freezer has been rigorously designed and tested to provide utmost
reliability, it is recognised that a fault could cause a run to stop prematurely.
To deal with a system lockup
1. The first task is to protect the samples if at all possible. If you can hear the solenoid
valve operating normally, LEAVE THE MACHINE RUNNING; it is virtually certain that
the program will be completed correctly.